Tank holder



FIG. 1 is a perspective view of a tank holder according to the presentinvention;

FIG. 2 is a front elevational view of the tank holder shown in FIG. 1;

FIG. 3 is a rear elevational view of the tank holder shown in FIG. 1;

FIG. 4 is a right side elevational view of the tank holder shown in FIG.1;

FIG. 5 is a left side elevational view of the tank holder shown in FIG.1;

FIG. 6 is a top plan view of the tank holder shown in FIG. 1;

FIG. 7 is a bottom plan view of the tank holder shown in FIG. 1; and,

FIG. 8 is a perspective view of the tank holder illustrated in FIG. 1,wherein the tank holder is shown attached to a medical ventilator andholding a pair of tanks, and wherein the broken lines are shown forenvironmental purposes only and form no part of the claimed design.

The ornamental design for a tank holder, as shown and described.